摘要
提出了一种基于多秘密共享的H.264视频无漂移鲁棒隐写方法。该方法首先利用(t,n)门限多秘密共享技术将需要嵌入的p个秘密信息利用矩阵方程分发成n个子秘密;然后利用H.264预测模式选择可嵌入的4×4亮度块,通过双系数选择嵌入块内DCT系数对;最后将分发好的子秘密按调制方法嵌入到视频的各个备选块的DCT系数对中。提取时,只需获取视频中部分t个子秘密即可恢复秘密信息。实验结果表明,该方法除能有效地恢复帧丢失、帧错等引起的秘密信息,还能有效控制帧内失真漂移,有较好的视觉隐蔽性,视觉效果良好。
This paper proposed a robust steganography method for H. 264 without intra-frame distortion drift by using secret sharing. The p embedded secret data was firstly distributed into n sub-secrets with specific polynomial by using( t, n) -threshold multi-secret sharing,then chose the block with prediction mode and chose DCT with paired-coefficients. Then it embeded the embedded data into the paired-coefficients of the 4 × 4 discrete cosine transform (DCT) block of the selected block. It could restore the hidden data by using the t sub-secrets of the video frames. The experiment results show that the method has the high frame loss and frame error robustness. In addition, the method can avoid intra-frame distortion drift and has better visual concealment.
出处
《计算机应用研究》
CSCD
北大核心
2015年第8期2433-2436,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(U1204703
61272407
U1304614)
河南省重点科技攻关项目(122102310004)
郑州市创新型科技人才队伍建设工程项目(10LJRC190
131PCXTD597)
河南省教育厅科学技术研究重点项目(14A630057
13A413355
13A790352
ITE12001)
关键词
H.264
多秘密共享
鲁棒性
帧内失真漂移
隐写
H. 264
multi-secret sharing
robust
intra-frame distortion drift
steganograph